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Temperature protection circuit for LED work lamp

A technology for LED work lights and temperature protection circuits, applied in the field of protection circuits, can solve problems such as infeasibility, stability, and inability to turn off work lights easily, achieving high feasibility and stability, ensuring quality and longevity , to avoid the effect of burnout

Inactive Publication Date: 2016-05-11
上海康耐司信号设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the LED work light is an on-site lighting fixture. When there is an emergency, such as accident repair or emergency rescue, the work light cannot be easily turned off.
Therefore, in this case, it is neither feasible nor stable to protect the lamps by temporarily turning off the working circuit of the LED.

Method used

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  • Temperature protection circuit for LED work lamp
  • Temperature protection circuit for LED work lamp

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0026] Such as figure 1 As shown, an LED lamp temperature protection circuit includes a detection module 1 arranged adjacent to the LED light source board for real-time detection of the real-time temperature of the LED light source board, and sends the detected real-time temperature to the control module 2 . The detection module 1 acquires temperature information through its internal temperature sensor. The control module 2 is a single-chip microcomputer (MCU), and the MCU has its own temperature sampling unit, so the real-time temperature of the light source board can also be detected through the temperature sampling unit. The entire temperature protection circuit also includes a power supply 5 connected to the MCU to provide a stable input voltage for the MCU. When the LED work light is work...

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Abstract

The invention relates to a protection circuit for an LED lamp, and specifically to a temperature protection circuit for an LED work lamp. The LED work lamp is arranged on a light source panel; the temperature protection circuit comprises a power supply, a voltage conversion module connected with the power supply and the LED work lamp separately and used for driving the LED work lamp to work by the power supply, and a control module connected with the voltage conversion module, wherein the control module comprises a temperature sampling unit used for collecting the real-time temperature of the light source panel; and the control module controls the electric energy output by the voltage conversion module according to the real-time temperature so as to adjust the working states of the LED work lamp. When the temperature of the LED light source panel is overhigh, the input voltage of the work lamp is lowered through the voltage conversion module to lower the electric energy of the work lamp, so that continuous illumination of the work lamp is ensured, and the environment temperature of the work lamp is lowered as well.

Description

technical field [0001] The invention relates to a protection circuit for an LED lamp, in particular to a temperature protection circuit for an LED lamp. Background technique [0002] Due to its small size, high brightness, and low power consumption, LED work lights are widely used in various large-scale construction operations, accident repairs, emergency rescue and disaster relief, and become indispensable lighting fixtures. But at the same time, because the work lamp has high power and high brightness, the lamp body will become a heat source after working for a long time. When the LED work light is under high temperature for a long time, it will cause great damage to the LED work light, seriously affect the life of the LED work light, and cause the light decay of the LED work light. [0003] The general temperature protection design circuit design scheme is to turn off the drive circuit of the LED work light when the temperature of the LED light source board is detected t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/10H05B45/37
Inventor 韦润芝
Owner 上海康耐司信号设备有限公司
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